./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:01:25,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:01:25,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:01:25,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:01:25,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:01:25,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:01:25,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:01:25,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:01:25,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:01:25,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:01:25,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:01:25,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:01:25,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:01:25,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:01:25,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:01:25,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:01:25,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:01:25,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:01:25,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:01:25,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:01:25,443 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:01:25,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:01:25,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:01:25,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:01:25,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:01:25,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:01:25,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:01:25,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:01:25,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:01:25,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:01:25,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:01:25,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:01:25,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:01:25,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:01:25,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:01:25,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:01:25,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:01:25,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:01:25,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:01:25,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:01:25,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:01:25,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:01:25,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:01:25,482 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:01:25,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:01:25,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:01:25,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:01:25,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:01:25,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:01:25,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:01:25,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:01:25,486 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:01:25,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:01:25,486 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:01:25,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:01:25,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:01:25,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:01:25,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:01:25,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:01:25,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:01:25,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:01:25,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:01:25,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:01:25,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:01:25,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:01:25,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:01:25,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:01:25,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:01:25,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:01:25,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:01:25,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:01:25,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:01:25,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:01:25,489 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:01:25,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:01:25,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:01:25,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 [2022-07-12 10:01:25,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:01:25,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:01:25,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:01:25,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:01:25,688 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:01:25,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2022-07-12 10:01:25,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2459625/f9f42549129548be85cbbbe042d356cb/FLAGc102fe122 [2022-07-12 10:01:26,151 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:01:26,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2022-07-12 10:01:26,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2459625/f9f42549129548be85cbbbe042d356cb/FLAGc102fe122 [2022-07-12 10:01:26,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb2459625/f9f42549129548be85cbbbe042d356cb [2022-07-12 10:01:26,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:01:26,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:01:26,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:01:26,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:01:26,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:01:26,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:26,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cc2570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26, skipping insertion in model container [2022-07-12 10:01:26,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:26,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:01:26,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:01:26,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-07-12 10:01:26,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:01:26,916 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:01:26,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-07-12 10:01:26,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:01:26,986 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:01:26,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26 WrapperNode [2022-07-12 10:01:26,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:01:26,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:01:26,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:01:26,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:01:26,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,039 INFO L137 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2022-07-12 10:01:27,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:01:27,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:01:27,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:01:27,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:01:27,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:01:27,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:01:27,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:01:27,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:01:27,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (1/1) ... [2022-07-12 10:01:27,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:01:27,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:01:27,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:01:27,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:01:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:01:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-12 10:01:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-12 10:01:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:01:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:01:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:01:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:01:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:01:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:01:27,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:01:27,141 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:01:27,262 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:01:27,264 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:01:27,458 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:01:27,485 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:01:27,485 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 10:01:27,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:01:27 BoogieIcfgContainer [2022-07-12 10:01:27,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:01:27,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:01:27,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:01:27,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:01:27,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:01:26" (1/3) ... [2022-07-12 10:01:27,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e26bd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:01:27, skipping insertion in model container [2022-07-12 10:01:27,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:01:26" (2/3) ... [2022-07-12 10:01:27,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e26bd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:01:27, skipping insertion in model container [2022-07-12 10:01:27,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:01:27" (3/3) ... [2022-07-12 10:01:27,508 INFO L111 eAbstractionObserver]: Analyzing ICFG 10_fmaxsym_cas.i [2022-07-12 10:01:27,513 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:01:27,520 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:01:27,520 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:01:27,520 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:01:27,581 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:01:27,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 96 transitions, 197 flow [2022-07-12 10:01:27,672 INFO L129 PetriNetUnfolder]: 10/107 cut-off events. [2022-07-12 10:01:27,672 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:01:27,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 10/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2022-07-12 10:01:27,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 96 transitions, 197 flow [2022-07-12 10:01:27,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 96 transitions, 197 flow [2022-07-12 10:01:27,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:01:27,699 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@177e01e9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b4ae108 [2022-07-12 10:01:27,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:01:27,714 INFO L129 PetriNetUnfolder]: 2/55 cut-off events. [2022-07-12 10:01:27,714 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:01:27,714 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:01:27,715 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:01:27,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:01:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:01:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash -659909704, now seen corresponding path program 1 times [2022-07-12 10:01:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:01:27,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567431415] [2022-07-12 10:01:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:01:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:01:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:27,842 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:01:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:27,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:01:27,896 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:01:27,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-12 10:01:27,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-12 10:01:27,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-12 10:01:27,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:01:27,900 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:01:27,903 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:01:27,903 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:01:27,944 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:01:27,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 154 transitions, 320 flow [2022-07-12 10:01:27,982 INFO L129 PetriNetUnfolder]: 19/178 cut-off events. [2022-07-12 10:01:27,982 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:01:27,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 178 events. 19/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 127. Up to 6 conditions per place. [2022-07-12 10:01:27,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 154 transitions, 320 flow [2022-07-12 10:01:27,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 154 transitions, 320 flow [2022-07-12 10:01:27,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:01:27,993 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@177e01e9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b4ae108 [2022-07-12 10:01:27,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:01:28,020 INFO L129 PetriNetUnfolder]: 4/85 cut-off events. [2022-07-12 10:01:28,021 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:01:28,021 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:01:28,021 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:01:28,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 10:01:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:01:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2016636923, now seen corresponding path program 1 times [2022-07-12 10:01:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:01:28,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211138405] [2022-07-12 10:01:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:01:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:01:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:28,063 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:01:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:28,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:01:28,083 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:01:28,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-12 10:01:28,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-12 10:01:28,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-12 10:01:28,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-12 10:01:28,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:01:28,084 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:01:28,099 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:01:28,099 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-12 10:01:28,143 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:01:28,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 194 places, 212 transitions, 445 flow [2022-07-12 10:01:28,170 INFO L129 PetriNetUnfolder]: 28/249 cut-off events. [2022-07-12 10:01:28,170 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:01:28,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 249 events. 28/249 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 638 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-07-12 10:01:28,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 212 transitions, 445 flow [2022-07-12 10:01:28,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 212 transitions, 445 flow [2022-07-12 10:01:28,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:01:28,177 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@177e01e9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b4ae108 [2022-07-12 10:01:28,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:01:28,191 INFO L129 PetriNetUnfolder]: 7/125 cut-off events. [2022-07-12 10:01:28,191 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:01:28,191 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:01:28,192 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:01:28,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 10:01:28,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:01:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1094663831, now seen corresponding path program 1 times [2022-07-12 10:01:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:01:28,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626232855] [2022-07-12 10:01:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:01:28,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:01:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:28,236 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:01:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:28,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:01:28,251 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:01:28,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-12 10:01:28,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-12 10:01:28,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-12 10:01:28,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-12 10:01:28,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-12 10:01:28,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:01:28,252 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:01:28,253 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:01:28,253 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-12 10:01:28,300 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:01:28,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 246 places, 270 transitions, 572 flow [2022-07-12 10:01:28,336 INFO L129 PetriNetUnfolder]: 37/320 cut-off events. [2022-07-12 10:01:28,336 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:01:28,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 320 events. 37/320 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 984 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 257. Up to 10 conditions per place. [2022-07-12 10:01:28,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 270 transitions, 572 flow [2022-07-12 10:01:28,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 270 transitions, 572 flow [2022-07-12 10:01:28,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:01:28,351 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@177e01e9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b4ae108 [2022-07-12 10:01:28,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-12 10:01:28,366 INFO L129 PetriNetUnfolder]: 12/181 cut-off events. [2022-07-12 10:01:28,366 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:01:28,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:01:28,366 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:01:28,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:01:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:01:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash 379328210, now seen corresponding path program 1 times [2022-07-12 10:01:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:01:28,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082310598] [2022-07-12 10:01:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:01:28,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:01:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:01:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:01:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:01:28,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082310598] [2022-07-12 10:01:28,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082310598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:01:28,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:01:28,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:01:28,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988222752] [2022-07-12 10:01:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:01:28,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:01:28,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:01:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:01:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:01:28,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 270 [2022-07-12 10:01:28,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 270 transitions, 572 flow. Second operand has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:28,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:01:28,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 270 [2022-07-12 10:01:28,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:01:28,667 INFO L129 PetriNetUnfolder]: 79/940 cut-off events. [2022-07-12 10:01:28,667 INFO L130 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-07-12 10:01:28,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 940 events. 79/940 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5255 event pairs, 34 based on Foata normal form. 188/1042 useless extension candidates. Maximal degree in co-relation 497. Up to 65 conditions per place. [2022-07-12 10:01:28,679 INFO L132 encePairwiseOnDemand]: 248/270 looper letters, 8 selfloop transitions, 0 changer transitions 0/239 dead transitions. [2022-07-12 10:01:28,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 239 transitions, 526 flow [2022-07-12 10:01:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:01:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:01:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 502 transitions. [2022-07-12 10:01:28,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9296296296296296 [2022-07-12 10:01:28,692 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 502 transitions. [2022-07-12 10:01:28,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 502 transitions. [2022-07-12 10:01:28,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:01:28,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 502 transitions. [2022-07-12 10:01:28,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 251.0) internal successors, (502), 2 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:28,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:28,706 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:28,707 INFO L186 Difference]: Start difference. First operand has 246 places, 270 transitions, 572 flow. Second operand 2 states and 502 transitions. [2022-07-12 10:01:28,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 239 transitions, 526 flow [2022-07-12 10:01:28,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 239 transitions, 514 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-12 10:01:28,718 INFO L242 Difference]: Finished difference. Result has 237 places, 239 transitions, 498 flow [2022-07-12 10:01:28,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=498, PETRI_PLACES=237, PETRI_TRANSITIONS=239} [2022-07-12 10:01:28,722 INFO L279 CegarLoopForPetriNet]: 246 programPoint places, -9 predicate places. [2022-07-12 10:01:28,722 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 239 transitions, 498 flow [2022-07-12 10:01:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:28,723 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:01:28,723 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:01:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:01:28,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-12 10:01:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:01:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 471707768, now seen corresponding path program 1 times [2022-07-12 10:01:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:01:28,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92699768] [2022-07-12 10:01:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:01:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:01:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:28,754 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:01:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:01:28,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:01:28,771 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:01:28,771 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-12 10:01:28,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-12 10:01:28,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-12 10:01:28,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-12 10:01:28,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-12 10:01:28,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-12 10:01:28,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:01:28,772 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 10:01:28,773 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:01:28,773 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-12 10:01:28,813 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:01:28,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 298 places, 328 transitions, 701 flow [2022-07-12 10:01:28,879 INFO L129 PetriNetUnfolder]: 46/391 cut-off events. [2022-07-12 10:01:28,879 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-12 10:01:28,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 391 events. 46/391 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1324 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 333. Up to 12 conditions per place. [2022-07-12 10:01:28,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 328 transitions, 701 flow [2022-07-12 10:01:28,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 328 transitions, 701 flow [2022-07-12 10:01:28,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:01:28,890 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@177e01e9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b4ae108 [2022-07-12 10:01:28,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:01:28,902 INFO L129 PetriNetUnfolder]: 13/182 cut-off events. [2022-07-12 10:01:28,902 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-12 10:01:28,902 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:01:28,902 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:01:28,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:01:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:01:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash 281260307, now seen corresponding path program 1 times [2022-07-12 10:01:28,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:01:28,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908524461] [2022-07-12 10:01:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:01:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:01:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:01:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:01:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:01:28,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908524461] [2022-07-12 10:01:28,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908524461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:01:28,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:01:28,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:01:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806772596] [2022-07-12 10:01:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:01:28,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:01:28,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:01:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:01:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:01:28,927 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 328 [2022-07-12 10:01:28,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 328 transitions, 701 flow. Second operand has 2 states, 2 states have (on average 287.0) internal successors, (574), 2 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:28,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:01:28,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 328 [2022-07-12 10:01:28,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:01:29,307 INFO L129 PetriNetUnfolder]: 191/1940 cut-off events. [2022-07-12 10:01:29,307 INFO L130 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2022-07-12 10:01:29,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1940 events. 191/1940 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13903 event pairs, 98 based on Foata normal form. 491/2250 useless extension candidates. Maximal degree in co-relation 1101. Up to 161 conditions per place. [2022-07-12 10:01:29,342 INFO L132 encePairwiseOnDemand]: 301/328 looper letters, 10 selfloop transitions, 0 changer transitions 0/291 dead transitions. [2022-07-12 10:01:29,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 291 transitions, 647 flow [2022-07-12 10:01:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:01:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:01:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 609 transitions. [2022-07-12 10:01:29,344 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9283536585365854 [2022-07-12 10:01:29,344 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 609 transitions. [2022-07-12 10:01:29,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 609 transitions. [2022-07-12 10:01:29,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:01:29,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 609 transitions. [2022-07-12 10:01:29,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 304.5) internal successors, (609), 2 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:29,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:29,347 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:29,348 INFO L186 Difference]: Start difference. First operand has 298 places, 328 transitions, 701 flow. Second operand 2 states and 609 transitions. [2022-07-12 10:01:29,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 291 transitions, 647 flow [2022-07-12 10:01:29,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 291 transitions, 627 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-07-12 10:01:29,353 INFO L242 Difference]: Finished difference. Result has 288 places, 291 transitions, 607 flow [2022-07-12 10:01:29,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=607, PETRI_PLACES=288, PETRI_TRANSITIONS=291} [2022-07-12 10:01:29,354 INFO L279 CegarLoopForPetriNet]: 298 programPoint places, -10 predicate places. [2022-07-12 10:01:29,354 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 291 transitions, 607 flow [2022-07-12 10:01:29,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 287.0) internal successors, (574), 2 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:29,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:01:29,354 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:01:29,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:01:29,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 10:01:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:01:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash 579959964, now seen corresponding path program 1 times [2022-07-12 10:01:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:01:29,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215928719] [2022-07-12 10:01:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:01:29,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:01:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:01:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:01:29,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:01:29,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215928719] [2022-07-12 10:01:29,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215928719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:01:29,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:01:29,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:01:29,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915538246] [2022-07-12 10:01:29,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:01:29,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:01:29,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:01:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:01:29,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:01:29,411 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 328 [2022-07-12 10:01:29,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 291 transitions, 607 flow. Second operand has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:01:29,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:01:29,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 328 [2022-07-12 10:01:29,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand